Safety



(No Model.) ZSheets-Sheet 1. M. C; PULLENLOVE. SAFETY APPLIANGB PORBLEVAYTURS. No. 524,979. Patented Aug. 21, 1894.

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` SAFETY APPLI-ANGE'POR BLBVATURS. No. 524,979.

Patented Aug'. 21,1894.

ps www lUNITED STATES MCCLELLAND C. FULLENLOVE, OF CHICAGO, ILLINOIS,ASSIGNOR OF ONE- HALF TO JOHN C. COSGROVE, OF SAME PLACE.

SAFETY APPLIANCEA FOR- ELEVATORSL.

SPECIFICATION forming part of Letters Patent No. 594,979, dated August21, 1894. Application filed November 2,1 893. Serial No. 489.739- (NOmodel-l To a/ZZ whom it may concern.-

Be it known that I, MCCLELLAND C. FUL- TJENLOVE, a citizen of the UnitedStates, resid- 4ing at Chicago, Cook county,Illinois, have in-.ventedvcertain new and useful Improvements 1n Safety Appliances forElevators, of which I do declare the. following to be a full, clear, andexact description, reference being had to the accompanying drawings,forming part of this specification.

In the running kof elevators it often happens that the operator neglectsto close the door or gate before the elevator car is started 1n upwardor downward direction and as passengers attempt to get upon the elevatorcar while in motion there is danger of their belng caught between thecar and the floors past which the car is moving. This failure of theoperator to close the doors or gates of the elevator shaft beforestarting the car is one of the most frequent causes of accidents -V inthis class of apparatus, and the object of my present invention is toprovide improved means whereby the movement of the elevator car eitherin upward or downward direction shall be checked until the door or gateopposite which the car has stopped, is closed. This object of inventionI have accomplished by the novel mechanism hereinafter described,illustrated in the accompanying drawings and particularly defined in theseveral claims at the end of this specification.

Figure l is a view in vertical section through an elevator shaft, havingmy invention applied thereto. Fig. 2is an enlarged perspective viewlooking fromthe shaft out-v ward and showing the lower part of theelevator gate or door and partof the adjacent` shaft inclosure, andshowing also the means located adjacent the door for controlling thedogging mechanism that checks the moving of the elevator car when thedoor is open. Fig. 3 is a view similar to Fig. 2 but showing the doorpartially open. Fig. 4 is a view in vertical section through the bottomof the elevator car and the dogging mechanism affixed thereto andthroughthe shiftingmechanism located adjacent the door way for controlling saiddogging mechanism. Fig. 5 is a detail perspective view of one form ofdogging mechanism carried by the elevator car.

Fig. 6 is a View in horizontal section on line 6--6 of Fig. 4f. Fig. 7isa detail perspective view of one of the shoes with which the jaws `ofthe dogging mechanism are furnished. Fig. S is a vlew 1n centralvertical section through one of the jaws of the dogging mechanism shownin Figs. l-6. Fig. 9 is a view in vertical section through an elevatorand partof'its shaft showing a modified form of my invention as appliedto the controlling of the elevator cars, the starting and stopping ofwhich is effected by a hand lever. Fig. l0` is a view in horizontalsectionon line l0-10 of Fig. 9.

In the form of mv invention illustrated in Figs. l--8 of the drawings myinvention is shown as applied to that class of elevators in which thestarting and stopping of the elevator is effected by means of anoperators cable that extends vertically through the car, and in Figs. 9and l0 my invention is shown as applied to another familiar type ofelevators in which the startingand stoppingV of the car is effected by ahand lever within convenient reach of the operator. It will be seen,however, that my invention is not restricted to the particular type ofmechanism whereby the movement of the elevator car is effected. A

A designates the shaft of the elevator that extends through the severaldoors A of the building, and B denotes the elevator car that is raisedand lowered by the usual cable b. j

C designates the operators cable that extends through the elevator car Band serves to eect the stopping and starting of the car ina manner wellunderstood by those familiar with/that class of apparatus.

The shaft of the elevator A` is provided with the usual inclosure D,this inclosure being furnished at each floor with a door D through whichpassengers may pass to and from the elevator car B; this door D beingsustained in a manner free to slide back and forth as well understood.Beneath the bottom of the elevator car B` is mounted the dogging mechanfism that serves to check the operators cable C, or other means wherebythe starting and stopping of the car is effected. In the form of myinvention illustrated in Figs. l-S of ths drawings this floggingmechanism com- IOO vshoes e4'.

prises jaws E and E pivoted together by a bolt e'that depends from andis fixed` to a plate e attached to the bottom of the elevator caradjacent its edge, and from this plate e depends a strap eE-that extendsbeneath the (logging mechanism and serves to hold the same againstdisplacement. The jaws E and E are provided with arms E2 and E3, theouter ends of which carry the vertical plates or eX- tensions F and Fthat extend at the side of the elevator for some distance above andbelow its floor. A springjl may be used to hold jaws E and E normallyapart; The dogging mechanism is located upon the bottom of the elevatorcar at such point that its jaws will serve as a clutch to engage theoperators cable C and preferablythe jaws of the dogging mechanism areeach provided with the shoes e4 having curved ribs e5 to enter thespaces between the strandsof the cable in order to more firmly hold thecable. Preferably also the shoes e4 are pivotally connected to the jawsby a bolt e6 that passes through an extension e7 formed on the back ofeach of the The purpose lof thus providing the jawsof tlie doggingmechanism with pivoted shoes is to enable this mechanism to morecertainly hold the 'cable and it is obvious thatl ifthe` jaws be causedto bear against the cable C and the operator within the car attempts tomove the cable in either direction, the shoes e4' turning upon theirpivot point-will tend to more lirm'ly bind and hold the cable.

AUpon each of the floors A', or at other adjacent points of the elevatorshaft is mounted the" shifting mechanism whereby the doggng mechanismwill be brought into operation to' checlithe operators cable when thedoor or gate of the elevator car isv in open position. This shiftingmechanism, or shifter, in the preferred form of my invention consists ofan arm or plate G vthat is mounted upon a short shaft g journaled withina fixed bracket g', the opposite end of the shaft g being pro# videdwith an arm or extension H adapted to be operated by the door D of theelevator car. v The door D is preferably furnished with an arm or plated that serves tov engage the arm H and restore it to position when thedoor is closed'. The shifter is so located that when the door Dis inclosed position the arm or plate G will not affect the movement of the'plates or extensions F and F of the dogging mechanism, as` these plateshave curved ends and are at such distances/apart as tok freely pass thearm or pla-te Gr when the latter is in the vertical position shown inFig. 2 of the drawings. It will'be seen, however, that when the car B isbrought opposite aflo'or A of the shaft the arm or plate G will at suchtime be between the plates or extensions F and F of the doggingmechanism, and if now the door D" be opened by moving it in thedirection of the arrow Fig. 2, the bottom of the door will contact withand rock backward the arin H of the shifter, thereby turning the shifterto the position shown in Fig. V3 of the drawings.V When the shifter isthus turned to the position shown in Fig. 3, the arm or plate G willspread apart the plates or extensions F and F of the clogging mechanismand will thereby cause the jaws E and E of this mechanism to firmly gripthe operators cable C. and it is manifest that so long as the door Dremains open the operators cable will be thus held against movement, andit will be impossible for the operator to start the elevator cai'. When,however, the door D is closed, the arm or plated at the bottom of thedoor (see Figs. 2 and 3), willV contact with the arm H and restore theshifter to the position seen in Fig. l, thereby releasing the plates orextensions F and F of the dogging mechanism and thus relieve -theoperatorsi'cable C from the jaws E and E. y n

It is manifest that the details of construction above set out may bevaried within wide limits without departing from the spirit of myinvention and that my invention may be applied to the various types ofapparatus commonly employed for effecting the starting and stopping ofthe elevator cars. Thus for example, in Figs. 9 and 10 of the drawings Ihave shown a modification of my inventio'n adapted for use'in'connection with that type' of elevators in which a hand lever isemployed for effecting the starting and stopping of the elevafor oai".elevators, it is customary tojinoiint beneath in this typeof.

the door of the car B, a rock shaft K carry-j ing arms lo to the ends ofwhich are attached sections ofthe operato'rs cable C.

The rock shaft Kis furnished with a bevel pinion k" with which engages alike pinion k2 mounted upon a shaft k3 conveniently journaled beneaththe door of the elevator. car: To the shaft los is attached a hand leverM, the grip-handle m of which extends toa point withinV convenient reachof the operator as' well understood. In order to arrest the move"- m-entof 'the hand lever M solong as vthe door of the elevator car is open,'Imount upo'n the elevator a flogging mechanism coi'np'rising al movablejaw P, the ends-of which are pro'- vided with the angular slots p withinwhich enter the studs r of the arms- R that are pivoted as at fr. The'opposite end of these pivoted arms R extend outside the elevator car andare furnished with the plates orV extensions F and F similar to theplates or extensions hereinbefore described, and arranged to be operatedby a shifter such as that hereinb'efore described. This shifter consistsof a plate or bar G fixed to one endof the shaft vided with an arm Hextending into position to be operated by the door D of the eleva-tor, aplate or bar d serving to restore the arm H l to normal position whenthe door D is closed. j' In order to enable the jaw P to' more' effectfively check the movement of the hand lever i M, I prefer to formthe faceof this' jaw with serrations, and to provide similar serrations IIO `other.

seen that when the elevator car B has been brought opposite the door-wayand the door D thereof has been opened, the shifter, being at such timebetween the plates F and F will spread these plates thereby causing thearms R to rock about their pivot points so as to move the pins fr'ofthese arms toward each This movement of the pins r along the inclineslotsp of the jaw P will force inward this jaw, causing its serratedface to bear against the hand lever M thereby locking the lever againstmovement until the door of the elevator has been closed and the hifterhas been restored to its normal posiion.

It will thus be seen that by means of my invention the elevator car mustremain at rest until the door opposite which it has been stopped is inclosed position,` and consequently all danger of injury to passengers bygetting on and olf the elevator car while it is in motion is avoided. Ido not wish my invention to be understood as restricted to the detailsof construction above set out since these may be varied within widelimits without departing from the spirit of the invention.

Having thus described the invention, what I claim as new, and desire tosecure by Letters Patent, is

1. The combination with an elevator shaft, a gate for closing adoor-,way of said shaft, an elevator car and mechanism for starting andstopping said car, of a clutch carried by the car for checking saidstarting and stopping` mechanism, pivoted arms arranged outside the carfor operating said clutch, and a shifter ixedin the hatchway andextending into po sition to engage said arms and having a part extendinginto position to be engaged by said gate. i,

2. The combination with an elevator shaft, a gate for closing a door-wayof said shaft, an elevator car and mechanism forstarting and stoppingsaid car, of dogging mechanism for checking said starting and stoppingmechan-A ism comprising a clutch having at least one movable jaw,pivotally sustained plates arranged outside the car but carried therebyfor operating said jaw, a shifter for engaging said plates, said shifterbeing fixed in the hatchway and having an arm extending into position tobe operated by the gate.

3. The combination with an elevator shaft, a gate for closing a door-wayof said shaft, an

elevator car and mechanism for starting and stopping said car, ofdogging mechanism for checking said starting and stopping mechanismcomprising a clutch carried by the car for engaging said starting andstopping mechanism, pivotally sustained elongated plates F and Fconnected with said clutch and a shifter fixed in the hatchway andhaving a pivoted arm or plate F arranged in position to engage saidpivotallysustained plates F and F', and having an arm II arranged to beoperated by the door.

4. The combination with an elevator shaft, a gate for closing a door-wayof said shaft, au elevator car and mechanism for starting and stoppingsaid car, of dogging mechanism for checking said starting and stoppingmechanism comprising a clutch carried by the car and a shifter foroperating said clutch comprising a pivoted arm G, fixed in the hatchway,an armor extension H arranged in position to be operated by the door andan extension or plate d connected to the door for engaging said arm H.

5. The combination with an elevator shaft, a gate for closing a door-wayof said shaft, an elevator car and mechanism for starting and stoppingsaid car, of dogging mechanism for checkin g said starting and stoppingmechanis'm comprising a clutch, pivoted arms for operating said clutch,said armsbeing provided with vertical plates F and F and a shifter forbringing said clutch into operation, comprising a pivoted arm G fixed inthe elevator shaft and between the paths of travel of the plates F and Fand an arm or extension H connected to said arm G and arranged in poroosition to be engaged by said gate.

6. The combination with an elevator shaft, a gate for closing a door-wayof said shaft, an elevator car and mechanism for starting and stoppingsaid car, of dogging mechanism for [o5 checking said starting andstopping mechanism comprising pivoted jaws having ribs e5 arranged toenter between the strands of the cable, and a suitable shifter forengaging said dogging mechanism, said shifter being lo- [1o cated inposition to be operated by the door.-

7. The combination with an elevator shaft, a gate for closing a door-Wayof said shaft, an elevator car and mechanism for stai-ting and, stoppingsaid car, of dogging mechanism for I I5 checking said starting andstoppingmechanism comprising a clutch having pivoted jaws provided withshoes pivotally mounted therein, and a shifter for operating said jaws,said shifter being arranged in position to be oper- 12o ated by saidgate. i

McoLnL-LAND c. FULLENLovE.

Witnesses:

FRED GERLACK, GEO. P. FISHER, J r.

